{"id":18954,"date":"2026-10-12T16:35:20","date_gmt":"2026-10-12T08:35:20","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/"},"modified":"2026-10-12T16:35:20","modified_gmt":"2026-10-12T08:35:20","slug":"output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/","title":{"rendered":"Output Overvoltage Protection: Do Not Treat the MS-60-12 Trimmer as an OVP Setting"},"content":{"rendered":"<p>A power supply can have an output-adjustment control without offering a user-configurable output-overvoltage protection setting. For an equipment builder, confusing those functions can turn a protection requirement into an undocumented commissioning step. Start an output overvoltage protection review by asking what the exact supplied revision actually specifies, rather than assigning a second function to a visible trimmer.<\/p>\n<p>The photographed example here is the WEHO MS-60-12. Its authentic nameplate identifies a +12V, 5A output, and its front edge has a control marked V ADJ. That physical marking is evidence of an adjustment interface\u2014not evidence of an adjustable OVP threshold. This article is a documentation and approval checklist, not a procedure for energised adjustment, fault injection or defeating protection.<\/p>\n<figure><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/01-application-a-33.png\" alt=\"Output Overvoltage Protection: Do Not Treat the MS-60-12 Trimmer as an OVP Setting  title=\" width=\"1536\" height=\"1024\" output overvoltage protection: do not treat the ms-60-12 trimmer as an ovp setting title=\"\"><figcaption>Conditional dry water-level-controller auxiliary electronics integration. The exact source chassis is floor-mounted; receiver compatibility, commissioning and protection testing are not established.<\/figcaption><\/figure>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Jadual Kandungan<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Togol<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/#Separate_three_questions_in_the_equipment_record\" >Separate three questions in the equipment record<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/#What_the_MS-60-12_evidence_supports\" >What the MS-60-12 evidence supports<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/#Make_the_supplier_question_specific\" >Make the supplier question specific<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/#Keep_receiver_protection_and_supply_settings_distinct\" >Keep receiver protection and supply settings distinct<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/#Release_a_documented_decision_not_a_guessed_setting\" >Release a documented decision, not a guessed setting<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/#Does_V_ADJ_mean_OVP_adjustment\" >Does V ADJ mean OVP adjustment?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/#Can_the_overload_percentage_answer_an_OVP_question\" >Can the overload percentage answer an OVP question?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/ms\/news\/output-overvoltage-protection-do-not-treat-the-ms-60-12-trimmer-as-an-ovp-setting\/#What_if_the_required_record_is_unavailable\" >What if the required record is unavailable?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Separate_three_questions_in_the_equipment_record\"><\/span>Separate three questions in the equipment record<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>First, establish the intended normal output and the receiving equipment\u2019s acceptable supply range. Second, establish the manufacturer\u2019s permitted adjustment method and limits for the delivered revision. Third, request the independently documented overvoltage protection behaviour, if that function is required. An answer to the second question does not automatically answer the third.<\/p>\n<table>\n<thead>\n<tr>\n<th>Record<\/th>\n<th>Evidence needed<\/th>\n<th>What it does not establish<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Normal output<\/td>\n<td>Exact model, receiver limits, approved load and cable conditions<\/td>\n<td>An OVP trip threshold<\/td>\n<\/tr>\n<tr>\n<td>Output adjustment<\/td>\n<td>Supplier-approved control, range and commissioning instruction<\/td>\n<td>Permission to alter a protection circuit<\/td>\n<\/tr>\n<tr>\n<td>Perlindungan voltan lampau<\/td>\n<td>Exact revision\u2019s function, threshold conditions and recovery information<\/td>\n<td>Compatibility with every receiver<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>A generic family description, an adjacent model\u2019s protection table or a control labelled only V ADJ cannot close the missing record. Keep the protection question open until the supplier and equipment engineering owner have resolved it for the actual assembly.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_the_MS-60-12_evidence_supports\"><\/span>What the MS-60-12 evidence supports<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The selected original photograph reads MS-60-12, INPUT 100\u2013240VAC 1.5A, 50\/60Hz and OUTPUT +12V 5A with the original DC symbol. The physical front terminals are L, N, protective earth, \u2212V and +V. The amber hinged terminal guard, front-right recessed orange adjustment control and green indicator lens belong to this photographed specimen; they are not interchangeable with another series\u2019 terminal arrangement.<\/p>\n<p>The complete MS-60 sheet shows a 111mm terminal-to-rear length, 78mm terminal-face width and 36mm height. Its bottom and side drawings each identify three M3 positions. These dimensions and interfaces describe the selected chassis, not an approved clearance envelope or evidence of hidden screw engagement in an illustration.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/03-product-detail-30.png\" alt=\"Output Overvoltage Protection: Do Not Treat the MS-60-12 Trimmer as an OVP Setting  title=\" width=\"1536\" height=\"1024\" output overvoltage protection: do not treat the ms-60-12 trimmer as an ovp setting title=\"\"><figcaption>Authentic source photograph, rectangular framing crop and uniform resize only. Product, trademark, labels, terminals and casing are unchanged; not an application substitute.<\/figcaption><\/figure>\n<p>The <a href=\"https:\/\/www.wehopower.com\/ms\/product\/60w-single-output-mini-size-power-supply-ms-dc-led-smps\/\">official English MS-60 page<\/a> and the <a href=\"\/ms\/sources\/MS-60-official.pdf\/\">retained complete manufacturer sheet<\/a> provide product and overload-protection information. The evidence reviewed for this article does not establish a specific adjustable OVP threshold or a user OVP-setting procedure. That is an evidence gap, not a finding that the product has no internal overvoltage protection.<\/p>\n<p>In particular, the sheet\u2019s overload-protection percentage must not be relabelled as an overvoltage threshold. The public page and retained sheet also differ in auxiliary input and other performance fields. Do not silently combine those revisions or extend the literal photographed input marking into a wider approved operating range.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Make_the_supplier_question_specific\"><\/span>Make the supplier question specific<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A useful technical enquiry identifies the full model, nameplate photograph, delivery revision and equipment requirement. Ask whether overvoltage protection is present in that exact revision, how its specified conditions are defined, whether the function is fixed or configurable, and what recovery behaviour applies. If the supplier offers a different model, reopen that model\u2019s electrical and mechanical qualification rather than treating it as the same specimen.<\/p>\n<p>Ask separately whether the visible V ADJ control has a permitted normal-output adjustment function and which instruction governs it. A missing OVP record should remain a hold item. Do not resolve it by turning the trimmer, borrowing a threshold from a neighbouring model or deliberately creating an abnormal input or load condition.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/04-engineering-context-34.png\" alt=\"Output Overvoltage Protection: Do Not Treat the MS-60-12 Trimmer as an OVP Setting  title=\" width=\"1536\" height=\"1024\" output overvoltage protection: do not treat the ms-60-12 trimmer as an ovp setting title=\"\"><figcaption>Source-grounded record separation: normal output, the VADJ instruction and missing revision-specific OVP evidence. Not a wiring diagram or test protocol.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Keep_receiver_protection_and_supply_settings_distinct\"><\/span>Keep receiver protection and supply settings distinct<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The receiving controller may impose limits different from the supply\u2019s nominal output marking. Its approved documentation, interface requirements and system protection design are separate inputs. A power-supply protection statement alone cannot establish the receiver\u2019s tolerance, an external protection setting or the equipment\u2019s restart permission.<\/p>\n<p>The two application illustrations show proposed dry, protected electronics integration at the source chassis\u2019s ordinary scale. They do not document a commissioned water-level controller, a qualified printing interface, a measured voltage or a protection test. The product is chassis-mounted, not a DIN-rail model, and all illustrated conductors enter the real terminal mouths rather than ventilation or screw-access openings.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-application-b-31.png\" alt=\"Output Overvoltage Protection: Do Not Treat the MS-60-12 Trimmer as an OVP Setting  title=\" width=\"1536\" height=\"1024\" output overvoltage protection: do not treat the ms-60-12 trimmer as an ovp setting title=\"\"><figcaption>A materially different protected industrial printing-machine electronics bay. This source-referenced integration illustration is not a verified printer load, measured output or performed protection test.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Release_a_documented_decision_not_a_guessed_setting\"><\/span>Release a documented decision, not a guessed setting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Before equipment acceptance, retain the exact supply identity, receiver requirements, approved normal-output instruction, supplier protection clarification and the engineering owner\u2019s decision. An unresolved OVP requirement remains unresolved even if the enclosure fits and the nameplate is readable. Any testing or commissioning belongs to the qualified team\u2019s approved procedure; this checklist does not supply one.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_V_ADJ_mean_OVP_adjustment\"><\/span>Does V ADJ mean OVP adjustment?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No such meaning is established by this specimen\u2019s marking. Treat it as the labelled interface and request the applicable instruction; do not assign an undocumented protection-setting function.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_the_overload_percentage_answer_an_OVP_question\"><\/span>Can the overload percentage answer an OVP question?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Keep the manufacturer\u2019s protection descriptions separate and request the exact overvoltage record needed by the equipment specification.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_if_the_required_record_is_unavailable\"><\/span>What if the required record is unavailable?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Hold that requirement open or qualify another documented solution. Neither a generated photograph nor a general family claim can substitute for the missing revision-specific evidence.<\/p>","protected":false},"excerpt":{"rendered":"<p>Separate normal output trim from the missing revision-specific OVP record. Use the exact MS-60-12 identity without assigning an undocumented protection-setting function.<\/p>","protected":false},"author":2,"featured_media":18950,"parent":0,"menu_order":113,"comment_status":"","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,284],"class_list":["post-18954","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-product-articles","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news\/18954","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/comments?post=18954"}],"version-history":[{"count":0,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news\/18954\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/media\/18950"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/media?parent=18954"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news_category?post=18954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}